Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ralph Williams, PH.D.
Forensic Psychologist in Sylmar, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1336225374
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Registry record
Entity type Individual (Type 1)
Name Ralph Williams
Credential PH.D.
Sex Male
Practice address 16350 Filbert St, Department of Mental Health, Sylmar, CA, 91342
Phone (818) 364-2152
Enumeration date Oct 31, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
103TF0200X Forensic Psychologist Behavioral Health & Social Service Providers · License PSY10419 (CA) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Ralph Williams?
Ralph Williams is registered in NPPES with the primary taxonomy of Forensic Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Los Angeles County Department of Mental Health Mental Health Clinic/Center (Including Community Mental Health Center) · Sylmar, CA NPI 1801810239 County of Los Angeles Auditor Controller Clinic/Center · Sylmar, CA NPI 1285744003 Maria Scott Clinical Psychologist · Sylmar, CA NPI 1316035496 Nancy Fung Tam Psychologist · Sylmar, CA NPI 1376624023 Elaine Powell Clinical Psychologist · Sylmar, CA NPI 1245317437 Michele Muto Clinical Social Worker · Sylmar, CA NPI 1568540797 Susanna Khachatryan Child & Adolescent Psychiatry Physician · Sylmar, CA NPI 1649359720 Zoada Harris Clinical Psychologist · Sylmar, CA NPI 1285713206
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.